Fairly easy to assemble.  However, the actual width is less than 4'.  It measures 45" and not 48".  It looks good on my patio and offers a measure of privacy from the neighbors.  We'll see how it stands up against the wind, as how I have it now it is free standing with no other support.  Not very heavy when assembled.  So far, so good after I worked out the measurement snafu with Wayfair.